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/*
xsample - extended sample objects for Max/MSP and pd (pure data)
Copyright (c) 2001-2003 Thomas Grill (xovo@gmx.net)
For information on usage and redistribution, and for a DISCLAIMER OF ALL
WARRANTIES, see the file, "license.txt," in this distribution.
*/
#include "main.h"
// Initialization function for xsample library
V lib_setup()
{
post("xsample objects, version " XSAMPLE_VERSION ", (C)2001-2003 Thomas Grill");
post("xsample: xrecord~, xplay~, xgroove~ - send objects a 'help' message to get assistance");
post("");
// call the objects' setup routines
FLEXT_DSP_SETUP(xrecord);
FLEXT_DSP_SETUP(xplay);
FLEXT_DSP_SETUP(xgroove);
#if FLEXT_SYS == FLEXT_SYS_MAX
finder_addclass((C *)"MSP Sampling",(C *)"xgroove~");
finder_addclass((C *)"MSP Sampling",(C *)"xplay~");
finder_addclass((C *)"MSP Sampling",(C *)"xrecord~");
#endif
}
// setup the library
FLEXT_LIB_SETUP(xsample,lib_setup)
// ------------------------------
void xsample::setup(t_classid c)
{
FLEXT_CADDBANG(c,0,m_start);
FLEXT_CADDMETHOD_(c,0,"start",m_start);
FLEXT_CADDMETHOD_(c,0,"stop",m_stop);
FLEXT_CADDMETHOD_(c,0,"set",m_set);
FLEXT_CADDMETHOD_(c,0,"print",m_print);
FLEXT_CADDMETHOD_(c,0,"refresh",m_refresh);
FLEXT_CADDMETHOD_(c,0,"reset",m_reset);
FLEXT_CADDATTR_VAR(c,"buffer",mg_buffer,ms_buffer);
FLEXT_CADDATTR_VAR_E(c,"units",unitmode,m_units);
FLEXT_CADDATTR_VAR_E(c,"sclmode",sclmode,m_sclmode);
FLEXT_CADDATTR_GET(c,"scale",s2u);
}
xsample::xsample():
buf(NULL),
#if FLEXT_SYS == FLEXT_SYS_MAX
unitmode(xsu_ms), // Max/MSP defaults to milliseconds
#else
unitmode(xsu_sample), // PD defaults to samples
#endif
sclmode(xss_unitsinbuf),
curmin(0),curmax(1<<30)
{}
xsample::~xsample()
{
// m_enable(false); // switch off DSP
if(buf) delete buf;
}
BL xsample::bufchk()
{
if(buf->Valid()) {
if(buf->Update()) {
// post("%s - buffer updated",thisName());
m_refresh();
}
return true;
}
else
return false;
}
I xsample::m_set(I argc,const t_atom *argv)
{
return buf->Set(argc >= 1?GetASymbol(argv[0]):NULL);
}
BL xsample::m_refresh()
{
// bufchk();
BL ret;
if(buf->Set()) { s_dsp(); ret = true; } // channel count may have changed
else ret = false;
m_min((F)curmin*s2u); // also checks pos
m_max((F)curmax*s2u); // also checks pos
return ret;
}
BL xsample::m_reset()
{
// bufchk();
BL ret;
if(buf->Set()) { s_dsp(); ret = true; } // channel count may have changed
else ret = false;
m_units();
m_sclmode();
m_min(0);
m_max(buf->Frames()*s2u);
return ret;
}
V xsample::m_loadbang()
{
m_reset();
}
V xsample::m_units(xs_unit mode)
{
if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)
if(mode != xsu__) unitmode = mode;
switch(unitmode) {
case xsu_sample: // samples
s2u = 1;
break;
case xsu_buffer: // buffer size
s2u = 1.f/buf->Frames();
break;
case xsu_ms: // ms
s2u = 1000.f/Samplerate();
break;
case xsu_s: // s
s2u = 1.f/Samplerate();
break;
default:
post("%s: Unknown unit mode",thisName());
}
}
V xsample::m_sclmode(xs_sclmd mode)
{
if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)
if(mode != xss__) sclmode = mode;
switch(sclmode) {
case 0: // samples/units
sclmin = 0; sclmul = s2u;
break;
case 1: // samples/units from recmin to recmax
sclmin = curmin; sclmul = s2u;
break;
case 2: // unity between 0 and buffer size
sclmin = 0; sclmul = buf->Frames()?1.f/buf->Frames():0;
break;
case 3: // unity between recmin and recmax
// sclmin = curmin; sclmul = curlen?1.f/curlen:0;
sclmin = curmin; sclmul = curmin != curmax?1.f/(curmax-curmin):0;
break;
default:
post("%s: Unknown scale mode",thisName());
}
}
V xsample::m_min(F mn)
{
if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)
mn /= s2u; // conversion to samples
if(mn < 0) mn = 0;
else if(mn > curmax) mn = (F)curmax;
curmin = (I)(mn+.5);
// curlen = curmax-curmin;
m_sclmode();
}
V xsample::m_max(F mx)
{
if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)
mx /= s2u; // conversion to samples
if(mx > buf->Frames()) mx = (F)buf->Frames();
else if(mx < curmin) mx = (F)curmin;
curmax = (I)(mx+.5);
// curlen = curmax-curmin;
m_sclmode();
}
V xsample::m_all()
{
if(!bufchk()) return; // if invalid do nothing (actually, it should be delayed)
// curlen = (curmax = buf->Frames())-(curmin = 0);
curmin = 0; curmax = buf->Frames();
m_sclmode();
}
V xsample::m_dsp(I /*n*/,S *const * /*insigs*/,S *const * /*outsigs*/)
{
// this is hopefully called at change of sample rate ?!
if(!m_refresh()) s_dsp();
}
V xsample::arrscale(I n,const S *src,S *dst,S add,S mul)
{
int n8 = n>>3;
n -= n8<<3;
while(n8--) {
dst[0] = (src[0]+add)*mul;
dst[1] = (src[1]+add)*mul;
dst[2] = (src[2]+add)*mul;
dst[3] = (src[3]+add)*mul;
dst[4] = (src[4]+add)*mul;
dst[5] = (src[5]+add)*mul;
dst[6] = (src[6]+add)*mul;
dst[7] = (src[7]+add)*mul;
src += 8,dst += 8;
}
while(n--) *(dst++) = (*(src++)+add)*mul;
}
V xsample::arrmul(I n,const S *src,S *dst,S mul)
{
int n8 = n>>3;
n -= n8<<3;
while(n8--) {
dst[0] = src[0]*mul;
dst[1] = src[1]*mul;
dst[2] = src[2]*mul;
dst[3] = src[3]*mul;
dst[4] = src[4]*mul;
dst[5] = src[5]*mul;
dst[6] = src[6]*mul;
dst[7] = src[7]*mul;
src += 8,dst += 8;
}
while(n--) *(dst++) = *(src++)*mul;
}
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